﻿#pragma execution_character_set("utf-8")

#include "ipaddress.h"
#include "qlabel.h"
#include "qlineedit.h"
#include "qboxlayout.h"
#include "qregexp.h"
#include "qvalidator.h"
#include "qevent.h"
#include <QDebug>
#include <QRegularExpressionValidator>

IPAddress::IPAddress(QWidget* parent) : QWidget(parent)
{
	bgColor = "#EFEFEF";
	borderColor = "#A6B5B8";
	borderRadius = 3;
	//用于显示小圆点的标签
	labDot1 = new QLabel;
	labDot1->setObjectName("qlabDot1");
	labDot1->setStyleSheet("color: rgb(0, 0, 200);font: 10pt Microsoft YaHei;");
	labDot1->setAlignment(Qt::AlignCenter);
	labDot1->setText(".");
	labDot2 = new QLabel;
	labDot2->setObjectName("qlabDot2");
	labDot2->setStyleSheet("color: rgb(0, 0, 200);font: 10pt Microsoft YaHei;");
	labDot2->setAlignment(Qt::AlignCenter);
	labDot2->setText(".");
	labDot3 = new QLabel;
	labDot3->setObjectName("qlabDot3");
	labDot3->setStyleSheet("color: rgb(0, 0, 200);font: 10pt Microsoft YaHei;");
	labDot3->setAlignment(Qt::AlignCenter);
	labDot3->setText(".");
	//用于输入IP地址的文本框
	txtIP1 = new QLineEdit;	
	txtIP1->setObjectName("txtIP1");
	txtIP1->setStyleSheet("color: rgb(0, 0, 200);font: 10.5pt Microsoft YaHei;");
	txtIP1->setAlignment(Qt::AlignCenter);
	txtIP1->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP1, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
	txtIP2 = new QLineEdit;
	txtIP2->setObjectName("txtIP2");
	txtIP2->setStyleSheet("color: rgb(0, 0, 200);font: 10.5pt Microsoft YaHei;");
	txtIP2->setAlignment(Qt::AlignCenter);
	txtIP2->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP2, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
	txtIP3 = new QLineEdit;	
	txtIP3->setObjectName("txtIP3");
	txtIP3->setStyleSheet("color: rgb(0, 0, 200);font: 10.5pt Microsoft YaHei;");
	txtIP3->setAlignment(Qt::AlignCenter);
	txtIP3->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP3, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
	txtIP4 = new QLineEdit;	
	txtIP4->setObjectName("txtIP4");
	txtIP4->setStyleSheet("color: rgb(0, 0, 200);font: 10.5pt Microsoft YaHei;");
	txtIP4->setAlignment(Qt::AlignCenter);
	txtIP4->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	connect(txtIP4, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
	//设置IP地址校验过滤
	QString pattern = "(2[0-5]{2}|2[0-4][0-9]|1?[0-9]{1,2})";
    QRegularExpression  regExp(pattern);
    QValidator* validator = new QRegularExpressionValidator(regExp, this);
	txtIP1->setValidator(validator);
	txtIP2->setValidator(validator);
	txtIP3->setValidator(validator);
	txtIP4->setValidator(validator);
	//绑定事件过滤器,识别键盘按下
	txtIP1->installEventFilter(this);
	txtIP2->installEventFilter(this);
	txtIP3->installEventFilter(this);
	txtIP4->installEventFilter(this);
	QFrame* frame = new QFrame;
	frame->setObjectName("frameIP");
	QStringList qss;
	qss.append(QString("QFrame#frameIP{border:1px solid %1;border-radius:%2px;}").arg(borderColor).arg(borderRadius));
	qss.append(QString("QLabel{min-width:15px;background-color:%1;}").arg(bgColor));
	qss.append(QString("QLineEdit{background-color:%1;border:none;}").arg(bgColor));
	qss.append(QString("QLineEdit#txtIP1{border-top-left-radius:%1px;border-bottom-left-radius:%1px;}").arg(borderRadius));
	qss.append(QString("QLineEdit#txtIP4{border-top-right-radius:%1px;border-bottom-right-radius:%1px;}").arg(borderRadius));
	frame->setStyleSheet(qss.join(""));
	QVBoxLayout* verticalLayout = new QVBoxLayout(this);
	verticalLayout->setContentsMargins(0, 0, 0, 0);
	verticalLayout->setSpacing(0);
	verticalLayout->addWidget(frame);
	//将控件按照横向布局排列
	QHBoxLayout* layout = new QHBoxLayout(frame);
	layout->setContentsMargins(0, 0, 0, 0);
	layout->setSpacing(0);
	layout->addWidget(txtIP1);
	layout->addWidget(labDot1);
	layout->addWidget(txtIP2);
	layout->addWidget(labDot2);
	layout->addWidget(txtIP3);
	layout->addWidget(labDot3);
	layout->addWidget(txtIP4);
}

bool IPAddress::eventFilter(QObject* watched, QEvent* event)
{
	if (event->type() == QEvent::KeyPress)
	{
		QLineEdit* txt = (QLineEdit*)watched;
		if (txt == txtIP1 || txt == txtIP2 || txt == txtIP3 || txt == txtIP4)
		{
			QKeyEvent* key = (QKeyEvent*)event;
			//如果当前按下了小数点则移动焦点到下一个输入框
			if (key->text() == ".")
			{
				this->focusNextChild();
			}
			//如果按下了退格键并且当前文本框已经没有了内容则焦点往前移
			if (key->key() == Qt::Key_Backspace)
			{
				if (txt->text().length() <= 1)
				{
					this->focusNextPrevChild(false);
				}
			}
		}
	}
	return QWidget::eventFilter(watched, event);
}

void IPAddress::textChanged(const QString& text)
{
	int len = text.length();
	int value = text.toInt();
	//判断当前是否输入完成一个网段,是的话则自动移动到下一个输入框
	if (len == 3) {
		if (value >= 100 && value <= 255) {
			this->focusNextChild();
		}
	}
	//拼接成完整IP地址
	ip = QString("%1.%2.%3.%4").arg(txtIP1->text()).arg(txtIP2->text()).arg(txtIP3->text()).arg(txtIP4->text());
}

QString IPAddress::getIP() const
{
	return this->ip;
}

QSize IPAddress::sizeHint() const
{
	return QSize(250, 20);
}

QSize IPAddress::minimumSizeHint() const
{
	return QSize(30, 10);
}

void IPAddress::setIP(const QString& ip)
{
	//先检测IP地址是否合法
	QRegExp regExp("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)");
	if (!regExp.exactMatch(ip)) {
		return;
	}
	if (this->ip != ip)
	{
		this->ip = ip;
		//将IP地址填入各个网段
		QStringList list = ip.split(".");
		txtIP1->setText(list.at(0));
		txtIP2->setText(list.at(1));
		txtIP3->setText(list.at(2));
		txtIP4->setText(list.at(3));
	}
}

void IPAddress::clear()
{
	txtIP1->clear();
	txtIP2->clear();
	txtIP3->clear();
	txtIP4->clear();
	txtIP1->setFocus();
}

void IPAddress::setBgColor(const QString& bgColor)
{
	if (this->bgColor != bgColor)
	{
		this->bgColor = bgColor;
	}
}

void IPAddress::setBorderColor(const QString& borderColor)
{
	if (this->borderColor != borderColor)
	{
		this->borderColor = borderColor;
	}
}

void IPAddress::setBorderRadius(int borderRadius)
{
	if (this->borderRadius != borderRadius)
	{
		this->borderRadius = borderRadius;
	}
}
